Effect of Urea on the Mechanical Properties of Gelatin Films Photocured with 2-Ethylhexyl Acrylate |
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| Authors: | Farhana Gul-E-Noor Mubarak A Khan Sushanta Ghoshal Ruhul A Khan Russel A Mazid A M Sarwaruddin Chowdhury |
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| Institution: | (1) Department of Applied Chemistry and Chemical Technology, University of Dhaka, Dhaka, 1000, Bangladesh;(2) Radiation and Polymer Chemistry Laboratory, Institute of Nuclear Science and Technology, Bangladesh Atomic Energy Commission, P.O. Box 3787, Dhaka, 1000, Bangladesh;(3) Department of Chemical Engineering and Polymer Science, Shahjalal University of Science and Technology, Sylhet, Bangladesh; |
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| Abstract: | Thin films of gelatin were prepared by casting. Then the films were photocured and the mechanical properties were studied.
The tensile strength of UV cured gelatin films showed about 10% enhancement than that of raw gelatin films. Minor amount of
urea (1–5%) was used as additive in aqueous gelatin solution and films were prepared using same technique. Four formulations
were prepared in methanol with 2-ethylhexyl acrylate in the presence of photoinitiator (darocur-1664). The films were soaked
in the prepared formulations and then cured under UV radiation at different intensities (5–25 passes). Percentage of urea,
monomer concentration, soaking time and radiation intensities were optimized with the extent of polymer loading, TS and elongation
at break of the photocured film. The films containing 2% urea, cured with 3% EHA for 3 min at 15th UV pass showed the highest
mechanical properties. A significant improvement of TS (31%) occurred when EHA (3%) was incorporated. |
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